water use efficiency, soil water, stripper head


A field study initiated in 2006 at the Southwest Research-Extension Center near Tribune, KS, was designed to evaluate the effects of three wheat stubble heights on subsequent grain yields of corn and grain sorghum. Corn and sorghum yields in 2020 were near the long-term average despite lower than normal precipitation. When averaged across years from 2007 through 2020, corn grain yields were 8 bu/a greater when planted into either high or strip-cut wheat stubble than into low-cut stubble. Average grain sorghum yields were 5 bu/a greater in high-cut stubble than low-cut stubble. Similarly, water use efficiency was greater for high or strip-cut stubble for corn, and greater for high-cut stubble for grain sorghum than for low-cut stubble. Harvesting wheat stubble shorter than necessary causes a yield penalty for the subsequent corn and grain sorghum crops.

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This work is licensed under a Creative Commons Attribution 4.0 License.